Trans Fluid Change?

[Lang]

Thanks Mark!

 

[Southmike]

have you tested the flow in your tranny psm6.4?
dieselsite used to have a link for testing that bypass valve.
I think this is the one.

TESTING:
•Bring the transmission up to temperature. It needs to be at least 100 degrees for this test.
•Turn the truck off.
•Remove the rear line from the transmission and place it into a bucket or similar container so that you can measure volume of your flow.
•Have someone turn the truck on.
•At idle (in park), you should measure 32 ounces of fluid in your bucket - in 15 seconds or less. This is an absolute minimum number. A properly working transmission will flow that amount in about 10 seconds or less. You should not see ANY fluid pumping out of the rear transmission port.

TEST RESULTS:
1.If you have the proper amount of flow, your transmission pump and coolers are working fine. SO, if you are running hot and have the proper flow (with no fluid coming out of the rear transmission port), you most likely have a mechanical problem causing high heat. This could be torque converter slippage or one of many other internal problems. You may have to see a professional at this point to help diagnose the problem.
2.If you do not have proper flow, OR you have fluid coming out of the transmission rear port, you either have a cooler blockage, OR a faulty cooler bypass valve. Here's how to tell.
•Trace the forward transmission line to the front of the truck.
•Remove the line from the 1st place it enters a cooler or the radiator (if so equipped).
•Now, do the same flow test checking flow at this point.
•There are two outcomes.
1.The first is that you now have enough fluid flow- this means your cooler /coolers are partially blocked. To determine which cooler is plugged you would perform the same flow test through one cooler at a time.
2.The second outcome will be that you don't have enough flow even with all coolers disconnected. This means you have an internal pump problem.

IMPORTANT! The outcome of this test assumes that you have NO fluid exiting the rear port of the transmission. If you perform a flow test with the coolers disconnected and you get fluid from the rear port on the transmission, your cooler bypass valve is bad.

taken From here-http://www.dieselsite.com/specialordertru-cool4739transmissioncooler.aspx

 

[Mark Kovalsky]

As with most technical things on dieselsite, this is flawed. It will not give an accurate result.

Get two containers that are at least a gallon each. You don't need them to hold this much, but it spills less fluid with larger containers.

Remove the rear line and place the end of the line in the first container. Have someone start the engine. When the flow becomes steady (no more bubbles) quickly move the line from the first container to the second. Keep it there for exactly 15 seconds then move the line back to the first container. Shut the engine off.

If you do the procedure as outlined by dieselsite the initial flow will have air, sometimes a lot of air. That can make a false failure.

There needs to be at least a quart in the second container to pass. If fluid sprays out of the trans where you removed the line STOP. The test has failed at this point. A little fluid is normal and nothing to worry about.

If there is less than a quart then either the coolers are plugged, a line is restricted, the bypass has stuck open, the pump is failing, or there is a lot of internal leakage. More diagnostics would be needed to find the problem.

NOTE: This is only valid for the E4OD/4R100. Other transmissions have different flow rates and requirements.

 

[Powerstroke Man 6.4]

As with most technical things on dieselsite, this is flawed. It will not give an accurate result.

Get two containers that are at least a gallon each. You don't need them to hold this much, but it spills less fluid with larger containers.

Remove the rear line and place the end of the line in the first container. Have someone start the engine. When the flow becomes steady (no more bubbles) quickly move the line from the first container to the second. Keep it there for exactly 15 seconds then move the line back to the first container. Shut the engine off.

If you do the procedure as outlined by dieselsite the initial flow will have air, sometimes a lot of air. That can make a false failure.

There needs to be at least a quart in the second container to pass. If fluid sprays out of the trans where you removed the line STOP. The test has failed at this point. A little fluid is normal and nothing to worry about.

If there is less than a quart then either the coolers are plugged, a line is restricted, the bypass has stuck open, the pump is failing, or there is a lot of internal leakage. More diagnostics would be needed to find the problem.

NOTE: This is only valid for the E4OD/4R100. Other transmissions have different flow rates and requirements.

Thanks Mark for the info not really a trans guy so I made a appointment at my local dealer for the week after next week. Hey Mark I got another question Do you know what the exact cause of shift flares on the 5R trans?

 

[Mark Kovalsky]

There are different causes for different flairs. What flairs do you mean?

 

[Powerstroke Man 6.4]

There are different causes for different flairs. What flairs do you mean?

in my DWR 6.4 CCSB when I take a turn then give it throttle i'll rev and slam every time on the same turn. It will also do it if it rolling in the throttle to pass a car. This new trans (2nd trans only has 30,000 miles on it). (Truck has 79,000 miles on it) did relearn everything ford says it normal. It did it since it rolled off the lot (50 miles on the truck) and it been tuned for the pass 50,000 miles and does the something. Thanks Mark for your help I appreciate it.

 

[Mark Kovalsky]

Low fluid can do this.

 

[Powerstroke Man 6.4]

Low fluid can do this.

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